#include <iostream>
#include <ctime>

#define DBG_LEVEL 0
#define INF_LEVEL 1
#define ERR_LEVEL 2
#define DEFAULT_LEVEL DBG_LEVEL
#define LOG(level_str,level,format,...) {\
    if(level >= DEFAULT_LEVEL){\
        time_t t = time(nullptr);\
        struct tm* ptm = localtime(&t);\
        char time_str[32];\
        strftime(time_str, 31, "%H:%M:%S", ptm);\
        printf("[%s][%s][%s:%d]\t" format "\n",level_str,time_str,__FILE__,__LINE__,##__VA_ARGS__);\
    }\
}\

#define DLOG(format,...) LOG("DBG",DBG_LEVEL,format,##__VA_ARGS__)
#define ILOG(format,...) LOG("INF",INF_LEVEL,format,##__VA_ARGS__)
#define ELOG(format,...) LOG("ERR",ERR_LEVEL,format,##__VA_ARGS__)

int main()
{
    DLOG("hello");
    ILOG("hello %d",123);
    ELOG("hello %s:%d","lkm",9145);
    return 0;
}



